Refrigerating apparatus



Aug. 23, 1932. J. G. Kms 1,873,425

REFRIGERATING APPARATUS Filed Feb. 28, 1929 5 Sheets-Sheet 1 sa s4 worum,

Aug- 23 1932 J. G. KING 1,873,425

REFRIGERATING APPARATUS Filed Feb. 28. 1929 3 Sheets-Sheet 2 3&9 Saw/wcm) Hund/mam SF2/lvm Aug' 23 1932- J. G. KING 1,873,425

REFRIGERATING APPARATUS Filed Feb. 28, 1929 3 Sheets-Sheet 5 cream cabinet.

' which reference will be made more i metal frame work 13 ofthe'cabinet. Vari- Patented. Aug. 23, 1913.2

, UNITED STATES PATENT OFFICE JESSE G. KING, OF DAYTON, OHIO, ASSIGNORTO FRIGIDAIRE CORPORATION, Ol' DAYTON,

Y OHIO, CORPORATION OF DELAWARE maremma Arran-.mus

This invention relates to refrigerating applalratus and especially to that specles of re- 'gerating cabinet known as an ice cream cabinet. j

An object of the invention is to economically construct an eicient type of refrigeratlng apparatus commonly referred to as an 1ce Another object of the invention is to make the cooling unit readily removable from the refrigerator cabinet.

l Another object'of the invention is toV sufiiciently support the boiler of the cooling unit.

Another object of the invention is to suiflciently protect the food compartments.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of the invention is clearly shown.

In the drawings:

Fig. 1 is a perspective view of an ice cream cabinet constructed accordingto the' invention.

Fig. 2 is a cross section of the cabinet taken on the line 2--2 of Fig. 3.

Fig. 3 is a cross section longitudinally through the cabinet.

Fig. 4 is a perspective view of the metal frame work of the cabinet.

Fig. 5 is a partial view of Fig. 2 disclosing the cooling unit being removed from the cabinet.

Fig. 6 is a cross section on line 6-16 of Fig. 5.

In Fig. 1 is disclosed a cabinet 10 generally known as an ice cream cabinet having the removable covers 12 on the top thereof. rllhe particular type of cabinet disclosed in this figure is commonly referred to as a two hole portable. On the front side of this cabinet is the removablesmall panel or cover 11 to particularly hereinafter.

In Fig. 4: is disclosed the skeleton of the ous parts of this frame work appear in the otherv cross sectional views of the cabinet. The frame work parts are preferably in the form of angle irons altho other forms inay be adopted. As disclosed in this figure the frame work has the top angle irons 14 and 15 and the bottom angle irons 16 and 17 connected together at the top-by, the end irons 18 and 19 and at the bottom by the end irons 20 and 21. The top and bottom are connected at the front by the side pieces 22 and 23 and l at the back by the side pieces 24 and 25. A smaller compartment at one end is divided olf by the angle irons '26, 27, 28 and 29. This compartment is for the location of the motor, compressor, condenser and receiver.

In Fig. 3 this compartment is at the right end -but in Fig. 8 it has been located at the left end. The location of the smaller compartment at either end is a matter of choice bottom of the larger compartment formed by the frame work 16, 17, 20 and 28. Above this is preferably located a supporting plate 33 for the insulation slabs 34 preferably of cork, for instance, in the form of cork board. Above the insulation 34 is a large tank 35 open at the top and preferably of copper. Insulation slabs, referably of cork board, 36, 37, 38 and 39 substantially cover the front,

ear and sides of the tank 35. A bituminous cement such as hydrolene is poured or brushed or otherwise thoroughly put on the tank and its insulation so that the cement is located between the tank itself and the insulation and is also in all cracks and junctures of the insulation and also thoroughly covers the outside of the insulation. A wood frame work 40 having suitable openingsv is placed across the top of the frame work and has a groove 103 for the upper ange of the tank 35. Upon the front side of the cabinet the insulation 36 has an opening therein for the wooden frame work .41 depending from the disclosed in Fig. 2.

point. A small number of tubes or coils 44 epend from the inner end of this boiler as In Figl`2 a, clamping ring 46 is secured'to the outer ring of the boiler 43 in any convenient manner 'and by means of the removable bolts 97 cooperates with the supporting ring 42 to maintain the boiler in its position extending into the tank 35. Inside e periphery of the boileris the boiler hea r 38 located on a supporting ring 47 commonly re- ."ferred to as a doughnut. Located on` the header is the inlet or liquid line valve 49 allowing the entrance of the 'refrigerant to the boiler as permitted by the needle valve 51 in y the bracket 52vwhich is in turn controlled by the ioat 50. The liquid refrigerantlevel 53 and the oil level 54 is disclosed in this Fig. 2. A boiler support 55 is located at'a convenient place for the support and location of the free end of the boiler. As disclosed in Fig. 2 this boiler support is preferably a circular sleeve and secured to the side of the tank 35 opposite to the one on which the riml of the boiler is secured. The support 55 has preferably a iange 56 so that it may be conveniently fastened as bysoldering to the side of thetank 35. The support 55 is slightly larger in diameter than the boiler so that the end of the boiler fits snugly therein. The support has a cut away portion 57 for the coils 44 as` disclosed in Fig. 6'and it has also a guide flange 58 for easy assembly of the boiler into position. `A removable insulation 59 preferably Kapok is placed about the boiler header and is prefercovered with removable slabs of'insulatlon 60 such as cork. Over the tank is placed the top 6l and on topof this is the top insulation 62 preferably of cork suitably cemented with a bituminous cement. About this insulation is the frame work members 63,

64, 65 and 66 extending across the top of the cabinet. A wooden top cover 67 extends across the top of the cabinet above the insulation and the wooden frame work and is s uitably secured to .the same by such means as the screws 104 and is also bolted to the metal frame work by the bolts 76. Food compartments such as the cans 68 and 69 are placed so that they extend downward intothe tank 35 and preferably rest on the bottom thereof. These food compartments are preferably made of copper or galvanized steel. These food compartments have a ledge 70 around their periphery for the top plate 61 to rest thereon. Insulating sleeves 71 preferably of rubber composition surround the top of the tank from the plate 61 to the top panel 72 referably of nickel zinc. Rings 73 preferab y of stainless steel are lapped over the openingsto the food compartments where they `join with the top 72. 'A shortsleeve preferably of stainless steel 74 is placed in the top of the food compartments 68and 69 and a flange 105is rolled or hammered to close the opening between the-sleeve74 and the compartments 68 and 69 and the sleeve 71'.

The sleeve 74 has a tight friction fit with the cans 68 and 69. As disclosed in Fig..3 the compartments 68 and 69 are adapted to receive other cans with. closed bottoms that Awill extend from the bottom of these compartments to the top or to where the sleeve 74 surrounds the interior. A flange 105 is suitably rolled or hammered at the top of `o en .sleeve 74. Brinesuch as a solution of alco ol or calcium chloride is put into the tank 3.5

toa suitable height thru the sleeve 102which vis covered ordinarily by the cap 101.

Within the boiler as disclosed in Fig. 2 is the baile 77 and the suction tube 7 8, wlth van oil over-.How hole therein, leading to the suction valve 79. Pipes or conduits lead from the valves 49 and 79 thru openings in the insula tion preferably such as disclosed in my C0 pendingapplication S. N. 702,456tothesmall- 86. A' suitable valve and snap switch, not

disclosed, starts or stops the runing of the compressor when the conditions of the systemv warrant such operation. This refrigerant supply apparatus is preferably supported on the platform -87 and resiliently suspended by the' springs 88 from the brackets 3,1. End panels 89 and 90, a front panel 91 and a rear panel7 not disclosed. are laced about the sides of the cabinet and suitably secured thereto to los Y cover and protect the structure within.,

Louvres 92 and 93 are made in the panels at' suitable places so thata cooling draft of air might be more easily s et up by the fan 86 in the refrigerant supply compartment.

The cabinet as disclosed in the drawings is sturdy, compact, economical and eiliciently constructed. It has the advantage that in case it isnecessary for any reason to examine or test the valves 49 or 79 it is only necessary to quickly and easily remove the fastening means for the panel 11 or the panel 96 and easily take out the insulation over the valve. It has heretofore been-necessary to remove an entire Side of the `cabinet to make suchl an exis tiltably removed from the tank and cabinet as disclosed in Fig. 5. It will be perceived in these figures that and the opening thru the outer panel of the cabinet are considerably smaller than the extreme contour of the cooling unit with its main boiler 43 and, depending tubes44. The cabinet itself will Anot be dismantled by such removal. Accordingly cabinets constructed according to the invention can have their cooling unit valves easily and quickly examined and even the cooling unit itself removed with-y ga out any dismantling of the cabinet. The in.

vention has a further advantage that th weight of the heavy boiler 43 is not borne entirely by one small section of the tank 35 but the weight is distributed by having the end of the boiler likewise supported from another section. rlhis tends to maintain the boiler in the position designed or it and prevents any buckling or crackingof the tank 35 due tothe concentration o the support for the boiler at one place. This type of support also permits the tubes 44 to hang speci cally in the lplace designed for them Without any danger oft wearing contact with any other part of the apparatus. Provisionotthe stainless steel sleeve 7 4 affords' complete protection yto the food from any possible corrosion or contamination. The stainless steel sleeve 74 besides presenting a bright and polished appearance is very easily cleaned. The invention is not restricted to the particular type of cabinet disclosed but various features of the invention are applicable to other types of cabinet. v

While the form of embodiment of the invention as herein disclosed constitutes a preerred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows.

l. In a refrigerating cabinet, a tank, a cooling unit extending through an opening in a side wall of said tank, said opening being smaller than the extreme contour of said coolin unit, insulation over a portion of said tan a panel about said insulation, said insulation and panel having openings in line with the opening in the side of the tank, said cooling unit being so proportioned that it may be tiltably removed from said' cabinet throu h said openings.

2. In a re rigerating cabinet, a tank, a cooling unit extending through an opening in a side wall of said tank, cooling surfaces depending from the inner end of said cooling unit, said opening being smaller than the opening in the tankI y in a side wall of said tank, tu

' of the tank,

the extreme contour of said cooling unit,

sulation about said tank, a-panel over a portion of said insulation, said insulation van4 anel having openings in line-with the o ing in the side of the tank, said cooling being so proportioned that it may be ti removed from said cabinet through .said openings.A A l Av 3. In a refrigeratng-cabinet, a tank, a cooling unit extending througl; an opening s dependin from the inner end of said cooling unit, said opening being smaller than the extreme contour of said coolin unit, insulation over a portion of said tan a panel about said insulation, said insulation and panel having openings in line with the opening in the side said cooling unit being so proportioned that it may be tiltably removed from said cabinet through saidopening.

of said cooling unit being greater than the size of said opening, said opening being smaller than the extreme extent of the contourof said cooling unit inside said tank, and said cooling unit being so proportioned that it is tiltably removable from said tank through said opening. 5. In a refrigerator cabinet, the combination with a tank, of a cooling unit comprising an elongated container for liquid refrigerant extending through an opening in a side wall of said tank, said container having one or more conduits depending therefrom within said tank for the circulation of refrigerant, the length of said container bcing-greater than the greatest extent of said opening, the greatest extent of the cross section of said cooling unit through said conduits, said container with said conduits being so proportioned that it is tiltably removable from said tank through said opening.

6. In a refrigerating cabinet, the combination with a tank, of a cooling unit extending through an opening in a side wall of said tank, said opening being smaller than the extreme extent of the contour of said cooling unit inside .said tank, said cooling unit being so proportioned that it is longitudinally removable through said opening to a predetermined position and then tiltably removable from said tank through said opening.

7. In a refrigerating cabinet, the combination with a tank, of a cooling unit comprising an elongated container for liquid refrigerant extending through an opening in a side wall of said tank, said container having a conduit depending therefrom within said tank, the length of said container being greater than the size of said opening, said opening being smaller than the greatest extent unit` tably said opening being smaller than x of the cross section of said cooling' unit through said conduit,v and said cooling unit being so proportioned that it is longitudinally removable through said opening to a pre- 5 determined'position and then tilta ly removable'from said tank through said opening. v 8. Ina refrigerating cabinet, the combination Iwith a'tank, of a cooling unit comprising a container for liquid refri rant ex- 10 tending through an opening in a si e wall of said tank, said container having a plurality of conduits depeudn therefron within said A tank, said opening ing smaller than the greatest extent of the cross section of said 15 cooling unit through said conduits, and said cooling unit being so proportioned that it is longitudinally removable through said opening to a predetermined position and then tiltably removable from said tank through n said opening.

- 9. Inv-a refrigerating cabinet, the combination with a tank, of a cooling unit extending through `an opening in a wall of said tank, said opening beingsmaller than the u extreme extent of the contour of said cooling unit inside said tank, said cooling unit being so proportioned that it is removable in one direction through said opening to a predetermined position and then tiltably removable a from said tank through said opening,

10. In a refrigerating cabinet, the combination with a tank, of-a cooling unit extending through an opening in a wall of said tank, said cooling unit having one vor more u cooling surfaces attached thereto within said tank, said opening being smaller than the greatest extent of the cross section of said cooling unit through said cooling surfaces, said cooling unit being so proportioned that a 't is tiltably removable from said tank through said opening. In testimony whereof I hereto aix my signature.

JESSE G. KING. 

